Tightener means for projection and other screens.



J. P. FALLON. TIGHTENER MEANS FOR PROJECTION AND A P P L I C A T I 0 N FI L E D D B 0 6 1 9 1 3.

. I 1gure 1, ista plan view TE SAES PATENT QFFICE.

TIGHTENER MEANS FOR PROJECTION AND OTHER SCREENS.

M Specification of Letters Patent.

Application filed December 6, 1918. Serial No.

To all whom it may concern:

Be it known that I, JoHN P. FALLON, a citizen of the United States,residing at the city of Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented certain new and useful Improvementsin Tightener Means for Projection and other Screens, of which thefollowing is a specification.

y invention has relation to tighte'nermeans for projection and otherscreens; and in such connection it relates particularly to theconstructive arrangement of the said means and of the operation thereoffor the defined purpose.

The moving picture exhibition screens have been a constant source oftrouble requiring attention to maintain them taut to ob tain the bestresults of the projected photoplay or sketch thereon, and if not somaintained efi'ects result which are peculiar, not those ordinarilyrequired, and which are most noticeable to observers of thephotodisplays on the screen. Various expedients ave been resorted to forthe purpose of obviating buckling or bulging of screens in the past, butthus far with but only more or less satisfactory results.

he principal object of my present invention is to provide atightener-means for screens, which is arranged ply manipulated tuallymaintain a mirrorgraph or other type of screen of a moving pictureexhibition always taut and thus .to enhance appreciably the true showefiects of a photo-play or sketch upon the screen.

The nature and scope of my present invention will be more fullyunderstood from the following description taken in connection with theaccompanying drawings formmg part hereof,'in whichof a framed screenhaving a tightener-means, embodying the essential main features of mysaid invention in application thereto; and Fig. 2, is a cross-sectionalView on the line mw, of Fig. 1, showing in detail the arrangement of mysaid tightener-means.

eferring tothe drawings a, is a projec- Patented Dec. 15, 1914. 805,000.

tion-screen connected with two of the sides and one of the ends to thetop of a framing a This framing a in the lower part of each of the sidesof the same is grooved at and in which sides are mounted the tongues 6of a perforated stretcher-crossbar 6. This bar rides on a series ofvertical pins 0, secured into the cross-strips a and a, of the framing aThe stretcher bar 6, is provided with a series of bolts e, partiallythreaded and extending through the cross-strip a These. bolts carry nuts6, for manipulating the stretcher-bar I), up and down in the grooves aof the said framing a The lower end of the said screen is fastened tothe stretcher-bar Z), so that slack in the screen can be quickly takenup by simple manipulation of the nuts 6 on the bolts e, as will beapparent from Fig. 1 of the drawings.

Having thus described the nature and object of my invention, what Iclaim as new and desire to secure by Letters Patent is The combinationwith a projection-screen, of a into an extension having grooves in thesides, a stretcher cross-bar mounted in said grooves and riding on pinsextending through said bar and in fixed relation .with the base-memberof said framing and basemember of said extension, tightening-boltsconnected with said stretcher cross-bar and extending through the basemember of said extension and removable-means connected with said boltsfor tightening and loosening the same in connection with said extensionand said screen connected at the top and sides with said framing and atthe bottom with said stretcher cross-bar, substantially as and for thepurposes described.

In witness whereof, I have hereunto set my hand in the presence of thetwo subscribing witnesses.

JOHN PATRICK FALLON.

Witnesses:

THOMAS M. SMITH, HELEN S. HOLT.

